Dry-pipe valve.



No. 857.187. PATEHTED JUNE 18, 1907- J. a. MELGGN, DRY PIPE VALVE. vAPPLIUATIDIT FILED SEPT. 11. 1902.

2 3HEETSSEEET 1.

PATENTED JUNE 18, 19074 J. G MELOON. DRY PIPE VALVE.

APPLICATION FILED 8131111. 1902.

2 SHEETS-SHBET 2.

. UNITED STATES.

GENERAL FIRE EXTINGUISHER GO 'PORA'IION' OF NEW YORK PATENT OFF-10E.

eoNa'riiAu c. Masons, on PnovwsN os, ano nt ISLAND, essioson o MPANY, OFNEW YORK, N. Y., A cos- DRY-PIPE vAws.

Specification of Letters Patent.

' Patented June 18; 1907'.

.i 'biimn gaa opt-ember 11.1502. sum to. 12am.

1'9. .aZl whom it may concerns" it known that I, JONATHAN C. 'MELQON,

ofthecity ande'ount of Providence (ind State of Rhode Isian haveinvented certain new and useful Improvements in Day Pipe Valves, (CaseA;) and I do hereby e- .clare the following specificationfta kenconnection with theiacoompan n'g drawings; forming apart of the same, toa full, clear, 'andexact' description thereof.

The invention relates to pipe valves (or-automatic sprinkler systems;inwhich a I ater valve is .held close against the water ssure in.the'supply pipe by means of aom the water way, and so that-when tlie"valve is 0 mod there will be a free and'im'-- obstructe passage for thewater-.through the valveeasin'g.

To that en'd the invention consists i marily in the combination, withthe va we of meansfor withdrawing said valve out" oi the water way when,the apparatub isto oper'-' ate. The means for t-hus withdrawhig vthevalve rnaj be either hydraulic orm'echanical.

The invention further consists of the coin;

binations and 81mm ements of t; h after described and c aimed.

' Referring'to the drawings, Figurefl is' a vertical section of a drypipe val e embody ing my invention, Fig. 2 is a sirnhar vertical sectionshowing a modified'form of valve,

Fig. 3 isa similar vertical section show the same form of valve as inFig. 2,-but'w'1th a' different means for withdrawing the valve Fig.4 isa vertical section on the line Y ,Y of

Ifigs. 2 and 3, and F 5 is a horizontal tion on the line X X of Fig. 3.

Referring to Fig. 1, A represents-the valv jei casing adapted to beconnected at its lower; end a. with the water supply pipe and-at itsupper. end a. with the do to the sprinkler system. ed valve; showninthis figur'efas a spherical very pipe leading valve, adapted toseat pn-one side against the fixed valve seatb, and on'the other. side a ainstthe valve seat'c' forined on the mom-- a e:member, As shown in Fig. '1',the

' movablemembenCis connected to the valve casing bya flexible connectionc, and so that B is a double seat- I said movable member may move fromthe position shown in full lines to the position indicated by dottedlines ,in Fig. 1. The space betweenthe fixed valve'seat b and the-movable member C constitutes the intermediate chamber, which isnormally open to the atmosphere through .a-drip pipe in the usualmanner.

The Iaive' casing A is rovided with an ex tension formi ac liniczilchar'nber E, the

E. in this chamber there is a piston This istonis connected to the valveB-by a suitaii ton and to said va ve. A small orifice or out outer endof w ich 151 closed by a head or sip I 6 5 let e is formed in the head Eto permit the;

escape of air from the chamber E as the piston travels back therein.

[scribed 1s as follows; Theeir'pressure in'the 'distributin pipesacting'upon the movable member C orcesthe valve seat-c against the valve113, said-valve being in turnforoed ainst the fixed seat 6, t erehyexcluding d-entrah'ce of water from the supply pi e.,

from the position shown in full lines to theposition indicated in'dottedlines in'Fig. .1,

it; and thus withdrawing the-valve wholly from,-thewater, waya'ndleaving a free and "unobstructed passage for the water throu h valvecasing. e pistonFisprefei-ab providedwith a cup aching which wil make atight joint Wit 'the wal of the charm bet E, and'uprevent the escape ofwater {through the orifice a, when the valve- B is .opened. i-

Fig. 2 shows a similar-construetion'and arrangement of parts, exceptthat the valve B is here shown as a flatvalveg'gand the movable uremberO is connected tomhe'valve casing in a sh htl 'diflerent manneriw Withthe spheric va eshown iii-13115.31,"it-is neces below the .-point atwhich it"zwill hold the.

' water pressure will serveto lift the valve B thereby pullingthe valveB to one side into a space in the valve casing formed to receive leconne'ctin link f, pivoted to said pis- "The operation of the apparatusabove desary to provide for a considerable movement of themovablemember. \Vith the fiat valve shown in Fig, iZ'amateri-ally lessmovement of the movable-meinber is required, and consequ'ently insteadof em loying an elon ated flexible connection, suc as shown-in 1g. 1,the movable member is shown in Fig. 2 as" connected with the valvecasing by connection a which need be simply of ag ielding drawn outofthe water way.

said projections beingadaptedto enter re- -ces'ses b b formed onopposite edges of the valve B, as shown in Figsml and 5. As wili be-readily understood from the drawin s,-

- the 'projectionse a, will serve to limit t e extent to which the val awill move upward with the movable mem er 'in o ning, and will'also serveto-guide the va ve as it is withdrawn from the water way. By extendingthe rejections into the cylindrical casing E, as s own in Fig; 5," saidrojections wi 1 .also serve -to support the va ve in its with drawnposition, andpreventit from falling 35 down into the bottom of thecasing. Inall other respects the operation of the construction shown inFig. 2 is the same as that of the construction shown in Fig. 1.

In Fig. 3 mechanical means, in the formof a spring G, is employed,instead of hydraulic means, for pulling the valve B out of the'water.way. Otherwise the construction is,the same as in Fig. 2. As will, beunderstood,

' when the air ressure'is on the system the flat valve B will be firmlyclamped and held between the "two valve seats b c. Consequently thespring G may be held under tension at this time. When the air pressureis reduced so that the valx e B ceases. to be firmly clamped, the springG will act to pull said valve out of the water way.

The valve casing 1s provided with. a suitable hand hole A, through whichaccess may be had to the valve for the purpose of rese'ating the same.Where a spring is employed to withdraw the valve, the valvemay be p'rovided with an eye 1), adapted to be engaged by a hook or other suitableinstrument, and by means of which the valve may be drawn back to itsseat, and held there against the pull of the spring until the valve hasbeen firmly clamped between the two valve seat-s.

In addition to providing a free and unobstructed passage for the waterthrough the from its position in thewater wayalso fur: nishesail-effective means for preventing columni'ng of the valve. With thevalve thus become accidentally reseated or columned.

I While it is preferred to have the valve entirely leave the waterway,it is not necessary that this should be done, as with a sufiicie'ntmovement of the movable valve seat the -valve may move only partiallyout of th water-way and; still provide sufficient. a for the passage ofthe water, and it isg'evi eat that so far as the feature ofnon-columningffis will effectively prevent its being reseated qr.columned. a

. to secure by Letters Patent is:

said valve closed by pressure intlwsystm, and mechanism arranged'xtowithdraw said valve from the water-way when said valve is released,substantially as described. 1

2. In a dry pipe valve, the "combination, with the watervvalve, of meansfor holding arranged-to withdraw said valve -from the water-way whensaid valve is released, substantially as described. Ina dry pipe' valve,the' combination, with the water-valve, of means for holding said valveclosed by pressure in the system,- and mechanismactuated. by waterpressure from. the supply'pipe'when said valve is released, arrangedtowithdraw said valve from the water-way, substantially as described.

. '4. In*'a dry pipe valve,.- the combination, with a double seatedvalve, .of'a' fixed seat for said movable seat being'rnounted uponawithdrawing said valve from the water-way when the pressure in thesystemis reduced to release said valve, substantially as described. "5.In a dry pipe valve, the combination, with the water-valve, of means forholding -said valve closed by pressure in the system, means for limitingthe 11 )Ward movement o'f "said valve when the valve is released, and

water-way; substantiallyas described. 6. In a dry pipe valve, thecombination,

said valve closed by pressure in the s stem,

from the water-way when said valve is re leased, and means for guidingsaid valve .in its movement, substantially as described.

7. In a dry pipe valve, the combination of a valve, a fixed seat forsaid valve and a movable seat for said valve between which fixed valvecasing, the withdrawal of the valve 1' and movable seats the valve isclamped as i What I claim as my invention anilidesiire 1'. In a dry pipevalve, the-combination,- withethe water-valve, of meaus'for -holdm'g'means for withdrawing said valve from the with the water-valve, ofmeans for holding mechanism arranged to withdraw sai valve,

withdrawn from position, it cannot ofcoui'se concerned, a partialwithdrawal of the valve;

said valve closed by pressure in the system, and mechanism actuated :bywater pressure said valve,- a movable seat for said valve,

movable part adapted to be acted upon by. the pressure-in the system,and' meansfor for said valve and a movable seat for said uisite pressureis maintained 1011 as the requisite pressure is maintained m t e system,said valve belng released and free to'leave the water-way when thepressure in the system is reduced, substantially.

as described.

8. In a dry pipe'valve, the combination,

with the valve casing, OI & valve, a fixed seat valve, between whicfiiced andm'ovable seats the valve is clamped as long as the re uisitepressure in the system is maintaine said valve being released and freeto leave the ,water-wa when the pressure in the system is reduce ,andsaid valve-casing being rovided'with archamber to receive said. va ve,substantially asdescribed.

9. In a dryipipe valve, the combination of a valve, a fixed seat forsaid valve, a movsaid valve being released and free to leave thewater-way. when the pressure in the sys-' tem is reduced, substantiallyits-described.

1,0. In a dry pippvalve, the combination 5 of a valve, a fixed seat forsaid valve, 8. movleavethe water-way w able member subjcted to thepressure in the system, a valve seat carried -b said movable mgmbei',betwen'which fixe se ts the valve is clam d as long as the requisitepressure is-ma ntained in the system, id valve-bein released and free toen the pressure inthe system is-reduced, and means for arresting t emovement of the valve in openingbefore the movable member has reachedthe limit of wits movement, substantially as described.

11. In a dry pipe valve, the combination of a valve a fixed seat forsaid valve, a m0vable seator said valve, between which seats the valveis normally clamped, said valve be- ;and means to guide said va ve inits move ment out of the water-way,'substantially as described.

12. In a dry pipe valve, the combination of a valve, a fixed seatfor-said valve, a mova le seat for said valve, between which seats thevalve is normally clamped, said valve being free to leave the water-waywhen released, means to limit the movement of said valve in opening, andmeans to guide said valve in its movement out of the water-way,substantially asdescribed.

in the system,

and movable.

ing free to leave the waterwa[y when released,.

16 In a -dry pipevalve, the combination,

with thewater valve, of means for holding said valve closed-by pressurein the system, and means made operative by the opening of said valve formoving said valve out of working relation with its seat, substantiallyas described.

14. The combination with a valve, I of means for holding said valveclosed against pressure by the action of a less pressure, and meansother than the valve operated by fluid pressure upon the reduction ofthehold' pressurefor withdrawing said valve to one side of the valve seat.

15. Th means for holding said valve closed against pressure by the.action of a less ressure, a movable member subjected to fluid when thevalve opens for withdrawing said valve to onev side of the valve seat.

16 The combination with a valve,"0f means for holding said valve closedagainst pressure by-theiaction of a less pressure, a

piston subjected to fluid pressure when the valve opens for wwithdrawingsaid valveto one side of the valve seat.

17. The combination of a chamber, opposing inlet and outlet valve seats,a valve between said valve seats, means for holding the valve and valveseats in engagement against pressure in the inlet by the action of aless pressure, and -a movable member subjected to the pressure-inthenhamber' for withdrawing saidvalve from between said valve seats.

18. The combination of a chamber, a su ply inlet, amovable memberseparating t e chamber from the system, an outlet through said member, avalve closing said inlet and outlet and held to-its seat by the pressureon the movable member, and means for with e combination with a valve, of

ressure drawing said valve from between the inlet and outlet the system.

19. The combination of a chamber, a su ply inlet,- a movable memberseparating t e chamber from thesystem, an outlet through said member, avalve closing said inlet and upon a reduction of pressure in outlet. andheld the movable member, a iston subjected to the pressure in the chamer for withdrawing the valve from between the inlet and outlet.

JONATHAN c. 'MELOON.

Witnesses: W. H. Tm'ms'roN,

J. H. THURSTON.

to its seat by the pressure on

